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S7-300 and SINAMICS G120 via PROFIBUS - read digital inputs from G120

7/24/2014 11:55 AM	Rate (0)
C-3PO Bronze Member Joined: 5/30/2014 Last visit: 12/1/2025 Posts: 178 Rating: (22)	Dear all, we have a task to read some data from SINAMICS G120 via PROFIBUS. We got GSD file, telegram 352 with FB10 FB20 and established communication. Everything works well. However, we need to read on S7-300 (314-C2) several DI (digital inputs) from G120, e.g. pressure switch, service switch). I saw that G120 has a limited set of telegrams it can be used. Can we do it in this way or not? How can we do that? Thank you in advance
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7/24/2014 1:29 PM	Rate (0)
nandgate Posts: 319 Rating: (9)	C-3PO Dear all, we have a task to read some data from SINAMICS G120 via PROFIBUS. We got GSD file, telegram 352 with FB10 FB20 and established communication. Everything works well. However, we need to read on S7-300 (314-C2) several DI (digital inputs) from G120, e.g. pressure switch, service switch). I saw that G120 has a limited set of telegrams it can be used. Can we do it in this way or not? How can we do that? Thank you in advance Hi C-3PO, Try using free message frame. Through Free message frame, almost any drive parameter accessed in the PLC. But parameter <--> telegram linking has to be done manually. With regards, nandgate.
nandgate Posts: 319 Rating: (9)
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7/24/2014 1:47 PM	Rate (0)
C-3PO Bronze Member Joined: 5/30/2014 Last visit: 12/1/2025 Posts: 178 Rating: (22)	Hi nandgate, how to use free message frame? I am a novice.
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7/25/2014 1:19 PM	Rate (0)
Piotr.M Platinum Member Joined: 6/24/2013 Last visit: 11/14/2025 Posts: 1696 Rating: (433)	Hi In STARTER You could make a link between bits from Your interface. Of course You will need copy digital inputs to interface on the PLC side as well. Regards Piotr

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